Default bold ink #c96b4a -> #ee928c

Owner default change (2026-09-23): the factory strong-color token
moves to the softer coral. The factory lives in the stylesheet
token (both theme blocks in globals.css) - settings' boldColor:null
means "factory" by design, so no record/schema change. The settings
row hint + placeholder follow, plus the placeholder test and two
comments that cited the old literal.

Live-verified: unset boldColor renders rgb(238,146,140) (#ee928c) on
the real <strong>; dialog hint reads "Empty = #ee928c".

components/md-blocks.tsx

@@ -341,7 +341,7 @@ export function MathDisplay(props: ComponentProps<"span"> & ExtraProps) {
 /** Bold as the REAL element (appearance fix, 2026-09-23): streamdown's
  *  default `strong` renders `<span class="font-semibold" data-streamdown=
  *  "strong">` — and `.lh-prose :where(strong, b)` matches strong/b
- *  ELEMENTS, so neither the factory ink (#c96b4a) nor a settings
+ *  ELEMENTS, so neither the factory ink (#ee928c) nor a settings
  *  boldColor ever landed on bold text (italic worked: streamdown leaves
  *  `em` native). Rendering the semantic element restores screen-reader
  *  emphasis AND lets the designed token rule apply unmodified — color

components/settings/appearance-section.tsx

@@ -116,10 +116,10 @@ export function AppearanceSection({
 					}}
 				/>
 			</SettingsRow>
-			<SettingsRow label="Bold color" hint="Empty = #c96b4a" testid="row-bold-color">
+			<SettingsRow label="Bold color" hint="Empty = #ee928c" testid="row-bold-color">
 				<CommitInput
 					value={md?.boldColor ?? ""}
-					placeholder="#c96b4a"
+					placeholder="#ee928c"
 					ariaLabel="bold color"
 					testid="input-bold-color"
 					onCommit={(v) => onSectionChange({ ...appearance, mdRendering: { ...md, boldColor: v === "" ? null : v } })}